Sanitary trap.



R.N.MURPHY.

v SANITARY TRAP. APPLICATION FILED MAK- 25.191]. RENEWED APR. 15. I918-'Il,%6 3?9@ Patented J une 4, 1918.

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R. N. MURPHY.

SANITARY TRAP.

APPLICATION FILED MAR. 26. 1911. RENEWED APR. 16. 19M.

Patented June 4, 1918.

Z SHEETSSHEET Z- UNITE sra'rns PATENT SANITARY TRAP. 1

Specification of Letters Patent.

Patented June 4, 1918.

Application filed March 26, 1917, Serial No. 157,536. Renewed April 16,1918. Serial No. 228,970.

To all whom it may concern:

Be it known that I, ROBERT NICHOLAS MURrI-Ina subject of the King ofGreat Britain, and residing at lllLisgar street, in the city of Ottawa,Province of Ontario, Dominion of Canada, have invented certain new anduseful Improvements in Sanitary Traps, and do hereby declare that thefol lowing is a full, clear, and exact description of the invention,such as will enable those skilled in the art to which it appertains tomake and use the same.

This invention relates to improvements in sanitary traps. It is commonpractice in sanitary engineering to utilize traps containing only onewater seal, and since siphoning. of this seal is extremely liable totake place, it frequently results that the household forms a ventilatingsystem for the sewer, the consequence often detrimental to the occupantsof the house.

Moreover, it is well known in engineering practice that sewer gases aretaken up by the water forming the seals and the gases are then passed onto the atmosphere of the house, and when there is no main orintercepting trap installed, the health of the occupants suffer.

In the present invention, these objections are overcome and a pair ofwater seals are provided in the trap and arranged in such a manner thatshould sewer gases be taken up by one of the seals they will be passedto the atmosphere and cannot under any. circumstances gain access to thehouse in which such trap is installed.

Further objects are to permit of the several parts of the trap beingflushed from'the water main so that should any blockingof the "trap takeplace it maybe readily removed without undue inconvenience Furtherobjects still are to permit of the usual smoke and gas tests beingreadily made onthe trap by utilizing the flushing mechanism. p p

Furtherobjects still are to render the .bore of the trap of uniformcross section throughout and continuous so that the velocity of flow ofwater passing through the trap is utilizedtookeep th'e'same clear,

With the above and other obgects 111 view Fig. 2 is a longitudinalsection of the same.

Fig. 3 is a transverse section on the line 22 of Fig. 2.

Fig. dis a fragmentary longitudinal section of the trap showingtheflushing plug or cock therein.

Fig. 5 isa sectional elevation of the flushing plug or cook.

Fig. 6 is a transverse section of the flushingplug or cook. i

Fig. 7 is a longitudinal section of the improved trap as seen whenattached to a basin, in this case the flushing plug or cock beinghorizontally disposed for the sake of clearance.

Fig. 8 is a fragmentaryperspective view of that form of the trapillustrated .inFig. 7 and showing the chamber with whichthe cleaningplug engages. I

Like characters of reference refer to-like parts in the severalfigures.

Referring to the drawings, A representsa bath with the improved trap Boperatively' connected thereto.

This trap consists ofa pan of water seals 10 and 11 operatlvelyconnected in" 'alinement, the seals being of substantially-uniform crosssection throughout, and arranged so that their bores are continuous. Theinlet end 12 of the trap is vertically disposed and connected to thebath A in'any suitable mannerusuallypractised in sanitary engineering,while in the embodiment illustrated the discharge end 13 of the trap ishorizontally disposed and arranged at asubstan- .tially lower level'thanthe inlet end.

Intermediate of the seals lO'and 11, a chamber l l is providedhaving athreaded npperend with which the cap" or cover 15 makes threadedengagement, while inte'rmediate f the height at the: ch mb r an seal 11for an object which will be "niade' clear hereafterzi To facilitateflushing the trap, I provide a removable plug or cock 18 adaptedtdro- 7tatably engage with the inner wall of the ch'aniber lflthe said :plugbeing formed'hol low and, provided with outlets 19 and 20located"intermediate of thelength and at the lower end thereof andarranged at substantiallyrightanglesrtoeach other. I

'Th'e'upper end of: the plug 18 is reduced as shown at -21 to engage.with" the packing land-22' which'niakes threaded engagement with theupper end of the chamber 14,the inner wall oft-he plug being threaded atthe upper end23 to engage. with'the pipe 24 designed to be connected tothe water main; I In that type of the invention illustrated'in Fig. 7,the water seals 10 and 11 are arrangedin I alinement with their borescontinuous and of uniform cross section', -but in this case owing to thefact that there is not sutficie-nt clearance-between the basin C and thetrap Bto permit of the flushing cook or plug' =being inserted' forflushing; purposes, the chamber 1 1'" is horizontally disposed;

I butis otherwise the facsimile of thatralready described with referenceto the other-figures ofthe -drawings. i y I The chamber 14:? 15 alsoprovided withan angularly disposed vent-19 but the recessed portionshowniat17-in Figsr2and4 is dispensed with, as it is quite unnecessaryto this type'ofa-trapi I The; plug-r 18 "in this case engages thechamber 1 1 5111- the manner' above described";

- and it is thought unnecessary to further enlarge -=uponor-illustratethe same, as it would only be unnecessary padding-mo the crip e;

Whenthef trap-i-is in use, thewater from the bath A passes through 'theinlet-port on 12 andisdelivered tothe seal 10 from-which it 1 passesthrough the seal 11 .to %th edischarge{":13-.-

- 1 shouldbe --particularly. noted that the upper' wallot -the-trapwhich conneots the two seals 10 andll is curvilinear, sothat the desireddirection otflow is given to the water and the water is driven throughthe seal- '11: the velocity of the inflow from thebath A to the inlet12.

lt will thus %be-. clear that theflushing of the seal 1 11 does" notdepend onthe water heart in the chamber 14, and by using: the velocity-0f flow-of; the waterin this-manner,

a thoroughsoouring or-cleaning of the-water seals 10; andI-11 tal esplace, and there is little or no-liabi lity'of sedimentcollectingtherein. Should by any chance a blockage take place in the trap it isonly necessary to remove the cap or cover 15 and insert the flushingplug or cook 18, in the chamber 14 whereupon the packing-gland 22 ispositioned and the plug" or cock' connected through the pipe 24 with thewatermain.

The plug :18 is now'=' rotatedimtil the discharge end 20 registers withthe seal 10 and when-the water from the main is turned on the said waterseal and inlet 12 will be flushed and thoroughly cleaned.

- The plug18 is now rotated until the discharge 20"registers with" the'r'eces's17, in which position the water seal 10 and-air vent 16 are cutoff, and when the water fr m-the main is turned-onthe water passes fromthe discharge, 20 through' the recess portionfl? into the seal 11 wherethe ressu e of the water removes any blockage-in the" seal 11 anddischarge. 13., II

The :plug l8'isnow rotated untilthe dischargev 19 regi'ste'rs withthe'airvent 16and on thewater from the main being turned on the said 'v'entis thoroughly flushed and cleaned. The plug 18 is now removed and thecap orcover 15 replaced'on the chamber 1 1 when the't'rap is incondition for use." I

It 'will'be readilyapparent that the plug 18" may be readily '7 utilizedto apply the smoke test to the trap by inserting it"i-n"th'e chamber-14in the manner above described and connectingi-the pipe 2 1- to thesmoke ap- I By arrangingthe', discha ge orifices 1'9 and 20 at rightangles to each'othr inthe' plug or cock 18, it will be 'cle'ar'tha'twhen one of the said discharge orifices registers with its coactingportion o'f the trap the other orifice is cut off, sothat the waterpressure from the main is applied to each portion of the trapindividuany'and in turnL' I I In that type'of the inventionill'ust'fatedin Fig. 7, the connection between the 'se'als10 and 11. consists of acurvilinear or semi-cireular u per wallwhich gifves the desireddirection of flow to thetw'ater' assingithrou h the trap; r I II I v I Thetrap ,mayi'n this case be 'als'o" cleaned through the medium of'theplug;18 inserted I in the cha nber, 1 1 and having water pres- 115sureapplied thereto fromthe main 'inlthe manner, above described. I I II It is thought unnecessary to re ldes'cribe this operation inconnection with-Fig. '7. I a. It will be readily ,unde'rstood that inman 120 ufacturing this trap that the bore will'be as smooth-aspossibleahd the corners 'well' djefined; so that there is noliabilityiof 'sedi ment lodging, thereon; and tendingito j stop vent 16,it will be readily seen mambo-111a 13.0

the water in the seal 11 siphon it is quite impossible for the water inthe seal 10 to be siphoned.

Should the pressure of the gas in the sewer with which the discharge 13connects rise above that of the atmosphere then the water in the seal 11would be forced into the seal 10 and the excess of sewer gas wouldescape through the vent 16, reducing the pressure in the sewer so thatthe Water in the seal 10 which wouldbe under a slight head would returnand fill seal 11.

By angularly disposing the vents 16 it will be seen that should anysolid matter enter the same even from the exterior of the trap it willgravitate into the seal 11 and will not lodge in the said vent and tendto plug the same, so that the vent is at all times in free communicationwith the atmosphere.

In the embodiment illustrated this trap is shown connected to a bath orbasin, but it will be readily understood that it may be used as anintercepting trap on closets, sinks and all types of household andsanitary fixtures.

As many changes could be made in the above construction, and manyapparently widely different embodiments of my invention, within thescope of the claims, constructed without departing from the spirit orscope thereof, it is intended that all' matter contained in theaccompanying specification and drawing shall be interpreted asillustrative and not in a limiting sense.

What I claim as my invention is:

1. A trap of the class described comprising a pair of water sealsarranged in alinement with a continuous bore of uniform cross sectionthroughout, a clean flush out chamber intermediate of the two Waterseals provided with a recess extending from below to above the normalwater level therein and an angularly disposed vent operativelyconnected. to the chamber.

2. A trap of the class described comprise ing a pair of water sealsarranged in alinement with a continuous bore of uniform cross sectionthroughout, an air vent operatively connected to the trap and means forflushing each of the water seals and the air vent individually from thewater main.

3. A trap of the class described comprising a pair of water sealsarranged in alinement with a continuous bore of uniform cross sectionthroughout, an air vent operatively connected to the trap and a hollowremovable plug adapted to be inserted into the trap and permit of thewater seal and air vent being individually flushed from the water main.

4. A trap of the class described comprising a pair of water sealsarranged in alinement with a continuous bore of uniform cross sectionthroughout, a chamber intermediate of the water seal, a plug adapted toengage with the chamber provided with a pair of discharged orificesarranged at right angles to each other, and an air vent operativelyconnected to the chamber.

5. A trap of the class described comprising a pair of water sealsarranged in alinement with a continuous bore of uniform cross sectionthroughout, a chamber intermediate of the Water seals having a recess inthe lower end thereof, a plug designed to rotatably engage with thechamber, a vent on the chamber intermediate of the length thereof, andmeans for connecting the plug to a water main.

In witness whereof I have hereunto set my hand.

ROBERT NICHOLAS MURPHY.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

Washington, I). 0.?

